Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12228188 | Methods and apparatus for a 3D-printed spring | — | 2025-02-18 |
| 10822076 | Dual rotor, rotary wing aircraft | David H. Hunter, Justin Thomas, Robert D. Beatty, Nicholas Charles Tuozzo, Thomas Alan Egolf +2 more | 2020-11-03 |
| 7547193 | Rotor blade assembly with high pitching moment airfoil section for a rotary wing aircraft | James E. Duh, Charles Berezin | 2009-06-16 |
| 7513750 | Rotor blade tip planform | Thomas Alan Egolf, Robert D. Beatty, John K. Karpowich, Ashish Bagai | 2009-04-07 |
| 7252479 | Rotor blade for a high speed rotary-wing aircraft | Ashish Bagai, Robert Blackwell, Timothy A. Krauss | 2007-08-07 |
| 6932569 | Active control of multi-element rotor blade airfoils | Michael S. Torok, Ashish Bagai | 2005-08-23 |
| 6840741 | Leading edge slat airfoil for multi-element rotor blade airfoils | Brian E. Wake, Peter F. Lorber, Ray-Sing Lin | 2005-01-11 |
| 6769872 | Active control of multi-element rotor blade airfoils | Michael S. Torok, Peter F. Lorber, Geoffrey C. R. Davis, Andreas Bernhard, William A. Welsh +1 more | 2004-08-03 |
| 6666648 | Directional elastomeric coupler | Andreas Bernhard, Michael S. Torok, Peter F. Lorber, Geoffrey C. R. Davis, William A. Welsh +1 more | 2003-12-23 |
| 5735670 | Rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (BVI) noise | David G. Matuska, Evan A. Fradenburgh | 1998-04-07 |
| 5620304 | Rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (BVI) noise | David G. Matsuka, Edward W. Gronenthal | 1997-04-15 |
| 5620303 | Rotor system having alternating length rotor blades for reducing blade-vortex interaction (BVI) noise | Joseph A. Visintainer | 1997-04-15 |
| D349647 | Container cap | — | 1994-08-16 |
| 5253979 | Variable diameter rotor having an offset twist | Evan A. Fradenburgh, S. Jon Davis, Joseph A. Visintainer | 1993-10-19 |
| 5150857 | Shroud geometry for unmanned aerial vehicles | Stephen Owen | 1992-09-29 |
| 5108044 | Shroud-fin integration shelf for a helicopter empennage structure | Steven D. Weiner | 1992-04-28 |
| 4334828 | Helicopter blade with a tip having a selected combination of sweep, taper and anhedral to improve hover efficiency | — | 1982-06-15 |
| 4324530 | Helicopter blade with a tip having a selected combination of sweep, taper and anhedral to improve hover efficiency | Evan A. Fradenburgh, William D. Jepson | 1982-04-13 |